CN212103654U - Bridge expansion joint drainage device - Google Patents
Bridge expansion joint drainage device Download PDFInfo
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- CN212103654U CN212103654U CN202020722974.1U CN202020722974U CN212103654U CN 212103654 U CN212103654 U CN 212103654U CN 202020722974 U CN202020722974 U CN 202020722974U CN 212103654 U CN212103654 U CN 212103654U
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- drain pipe
- expansion joint
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- drainage
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Abstract
The utility model discloses a bridge expansion joint drainage device, which comprises a drainage pipe, an L-shaped steel plate and a fixed steel bar; the drainage pipe is tightly attached to the edge of an interface between an asphalt pavement layer and a concrete pavement layer on the side surface of the bridge expansion joint, and the top of the drainage pipe is flush with the interface; the top and the side of the drain pipe are respectively provided with a small hole I and a small hole II; the L-shaped steel plate is arranged below the drain pipe; the upper end of the fixed steel bar is fixedly connected with the bottom of the L-shaped steel plate, and the lower end of the fixed steel bar is fixedly connected with the expansion joint steel bar of the bridge expansion joint; hemp ropes are filled in the drainage pipes. The utility model discloses the infiltration of layer and the concrete pavement layer interface department is mated formation to the device bridge expansion joint border pitch of can in time discharging, avoids water to get into the expansion joint, causes the harm to the bridge.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, a bridge expansion joint drainage device is related to.
Background
The bridge expansion joint is set up for satisfying the flexible needs that warp of bridge, generally adopts steel fiber concrete in the flexible slit notch, and the bridge deck pavement outside the expansion joint generally is bituminous concrete layer of mating formation and reinforced concrete layer of mating formation. The connection part of the asphalt concrete pavement layer and the steel fiber concrete in the opening of the expansion joint is easy to form cracks under the driving action of a vehicle due to different materials, and water on the bridge surface can enter the expansion joint from the boundary position of the asphalt pavement layer and the concrete pavement layer along the cracks. The water inflow of the expansion joint is one of the main reasons for damaging the expansion joint, and the expansion joint of the bridge is damaged under the condition of short operation time of part of bridges, so that the normal use of the bridge is influenced, and the road traffic is greatly influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bridge expansion joint drainage device to prior art not enough. The device can in time discharge the infiltration of bridge expansion joint border pitch layer of mating formation and concrete pavement layer interface department, avoids water to get into or detain the expansion joint, causes the harm to the bridge.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a bridge expansion joint drainage device comprises a drainage pipe, an L-shaped steel plate and a fixed steel bar; the drainage pipe is tightly attached to the edge of an interface between an asphalt pavement layer and a concrete pavement layer on the side surface of the bridge expansion joint, and the top of the drainage pipe is flush with the interface; the top and the side of the drain pipe are respectively provided with a small hole I and a small hole II; the L-shaped steel plate is arranged below the drain pipe; the upper end of the fixed steel bar is fixedly connected with the bottom of the L-shaped steel plate, and the lower end of the fixed steel bar is fixedly connected with the expansion joint steel bar of the bridge expansion joint; hemp ropes are filled in the drainage pipes.
Water on the bridge permeates into an interface between the asphalt pavement layer and the concrete pavement layer from cracks of the bridge deck and then permeates into expansion joints of the bridge; the L-shaped steel plate is used for fixing the position of the drain pipe, and the drain pipe is fixed at the position where the edge of the expansion joint is paved and connected with the bridge deck along the bridge direction; water in the boundary surface can enter the drain pipe through the small hole I and the small hole II and is discharged through the drain pipe, so that water is prevented from entering the expansion joint. The hemp rope can prevent concrete slurry from entering the drain pipe when the bridge is laid. The diameter of the drainage pipe is comprehensively determined according to the width of the bridge floor, the cross slope of the bridge floor, the longitudinal slope of the bridge and the maximum rainfall at the bridge site, and when the width of the bridge floor is large, the rainfall amount of the bridge floor is large, the cross slope of the bridge floor and the longitudinal slope of the bridge floor are small, the drainage pipe with the larger diameter is adopted, otherwise, the drainage pipe with the smaller diameter is adopted; the diameters and the intervals of the small holes I and the small holes II are determined according to the diameters of the drain pipes, when the diameters of the drain pipes are large, small values are obtained through large hole and hole intervals, and when the diameters of the drain pipes are small, large values are obtained through small hole and hole intervals. The fixed steel bar is bound on the steel bar of the expansion joint close to the fixed steel bar and is connected with the L-shaped steel plate in a welding way; the diameter of each fixed steel bar is 20-25 mm, the length of each fixed steel bar is 25-40 cm, the distance between each adjacent fixed steel bar and the L-shaped steel plate is 25-30 cm, and the fixed steel bars, the expansion joint steel bars and the L-shaped steel plates can be firmly connected; the thickness of the steel plate of the L-shaped steel plate below the drain pipe is not larger than the distance between the steel bar of the expansion joint and the interface, so that the accuracy of the position of the drain pipe is ensured, and all water permeating into the expansion joint is discharged through the drain pipe; the expansion joint, the asphalt pavement layer and the concrete pavement layer are all necessary structures for bridge pavement.
As a further technical improvement, the small holes II on the side surface of the drain pipe are opened towards the interface. The design can allow water in the interface to enter the small hole II and be discharged through the drain pipe.
As a further technical improvement, the diameter of the drain pipe is 3-4 cm, and the thickness of the pipe wall is 2-3 mm; the aperture of the small hole I at the top of the drain pipe and the aperture of the small hole II at the side face are both 8-10 mm, and the distance is 4-5 cm. The drain pipe can adopt a PVC pipe.
As a further technical improvement, the hemp rope comprises a rope I and a rope II; the rope I extends out of the two ends of the drain pipe by 10-15 cm; and the rope II extends out of the small hole I and the small hole II by 2-3 cm. In the bridge construction process, the hemp ropes can ensure that the small holes I and II on the drain pipe are not blocked by concrete when the concrete is poured; in the initial stage of use, the seepage water of the bridge body is discharged through the small holes I and II on the drain pipe and the siphoning action of the ropes I and II in the drain pipe; after the hemp ropes are completely rotten and disappear, the small holes I and II on the drain pipe and the drain pipe are not filled with fillers, so that water in the expansion joint can be discharged more favorably.
As a further technical improvement, the slope of the drain pipe is set to be consistent with the slope of the bridge body. So design makes the drainage pipe can better discharge infiltration.
In the utility model, the length of the two sides of the notch of the L-shaped steel plate is the same as the diameter of the drain pipe; the width of the steel plate of the L-shaped steel plate positioned below the drain pipe is the distance between the drain pipe fixing steel bar and the drain pipe; the width of the steel plate of the L-shaped steel plate, which is positioned beside the drain pipe, is 3 cm; the thickness of the L-shaped steel plate is 6-8 mm, and the distance between the L-shaped steel plates is 25-30 cm. The water drainage pipe is fixed at the most edge of the expansion joint along the bridge direction and is connected with the bridge deck pavement by the L-shaped steel; setting the gradient of the drain pipe in the transverse bridge direction to be consistent with the transverse slope of the bridge floor; the top surface of the drain pipe is fixed in the expansion joint, and the interface of the asphalt pavement layer and the concrete pavement layer at the joint of the top surface of the drain pipe and the expansion joint is at the same height.
The use method of the bridge expansion joint drainage device comprises the following steps:
determining the length and diameter of the drain pipe, the thickness of the pipe wall and the diameter and thickness of the joint of the drain pipe according to the width of the bridge, the bridge deck transverse slope, the bridge longitudinal slope and the maximum rainfall at the bridge site;
determining the diameters and the intervals of the small holes I and the small holes II on the top surface and the side surface of the drain pipe according to the diameter of the drain pipe and the thickness of the pipe wall; the wider the bridge is, the larger the slopes of the cross slope and the longitudinal slope are, the larger the rainfall in the place is, the larger the diameter of the bridge is, and the larger the diameters of the small holes I and II are, the smaller the distance is;
determining the diameter and the length of the hemp rope according to the diameters of the drain pipe, the small hole I and the small hole II, and installing the hemp rope in the drain pipe, the small hole I and the small hole II;
determining the diameter and the length of the fixed reinforcing steel bar and the width of the L-shaped steel plate below the drain pipe according to the diameter of the drain pipe, the position and the height of the reinforcing steel bar of the expansion joint and the like;
after the expansion joint is installed, determining the gradient of the drain pipe according to the cross slope and the longitudinal slope of the bridge floor, installing fixed steel bars, binding and connecting the fixed steel bars with the expansion joint steel bars, and welding the fixed steel bars with the lower end of the L-shaped steel plate;
a drain pipe is arranged on the L-shaped steel plate;
pouring steel fiber concrete in the slot of the telescopic seam; finishing the construction operation of the drainage device for the bridge expansion joint, wherein the small hole I at the top of the drainage pipe is just positioned near the top of the interface, and the small hole II at the side is just aligned with the interface; rainwater infiltration bridge floor is down to through the interface, in the expansion joint border passes through aperture I and II entering drain pipes in the aperture afterwards, discharged afterwards, avoid water to get into the expansion joint, cause the harm to the bridge.
Compared with the prior art, the utility model discloses the beneficial effect who possesses:
1. the utility model provides a bridge expansion joint drainage device discharges the water of expansion joint and the infiltration of bridge deck pavement seam crossing, avoids the expansion joint to damage because of the infiltration of water, has solved because of the expansion joint in concrete and the different problem that transverse crack leads to in the bridge floor water infiltration expansion joint easily appear with the bridge deck pavement material, greatly increased the durability and the life at expansion joint.
2. The utility model discloses ingenious characteristic of utilizing the rope made of hemp, the siphon that utilizes the rope made of hemp before the rope made of hemp does not rot discharges the log raft in the expansion joint, also avoids concrete jam drain pipe, and after the rope made of hemp rotten to disappearing, the position of former rope made of hemp has formed the drainage pore, is favorable to the discharge of the water in the expansion joint.
3. The utility model discloses simple structure, easy to carry out, drainage are effectual, can be effectual outside the water discharge expansion joint in with the infiltration expansion joint, guarantee the durability and the life at expansion joint, have better economic value and social price.
Drawings
Fig. 1 is a schematic view of the overall structure of the device.
Fig. 2 is a schematic view of the structure of the drain pipe and the hemp rope.
Fig. 3 is a cross-sectional view of a drain pipe.
Reference numerals: the concrete pavement structure comprises 1-drain pipe, 2-L-shaped steel plate, 3-fixed steel bar, 4-asphalt pavement layer, 5-concrete pavement layer, 6-interface, 7-small hole I, 8-small hole II, 9-expansion joint steel bar, 10-hemp rope, 11-rope I and 12-rope II.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-3, a drainage device for bridge expansion joints comprises a drainage pipe 1, an L-shaped steel plate 2 and a fixed steel bar 3; the drainage pipe 1 is tightly attached to the edge of an interface 6 between an asphalt pavement layer 4 and a concrete pavement layer 5 on the side surface of the bridge expansion joint, and the top of the drainage pipe 1 is flush with the interface 6; the top and the side of the drain pipe 1 are respectively provided with a small hole I7 and a small hole II 8; the L-shaped steel plate 2 is arranged below the drain pipe 1; the upper end of the fixed steel bar 3 is fixedly connected with the bottom of the L-shaped steel plate 2, and the lower end of the fixed steel bar is fixedly connected with the expansion joint steel bar 9 of the bridge expansion joint; the drain pipe 1 is filled with a hemp rope 10.
And the small hole II 8 on the side surface of the drainage pipe 1 opens towards the interface 6 of the bridge pavement layer.
The gradient of the drain pipe 1 is consistent with that of the bridge body.
Example 2:
this example differs from example 1 in that: the diameter of the drain pipe 1 is 3cm, and the thickness of the pipe wall is 2 mm; the apertures of the small holes I7 at the top of the drain pipe 1 and the small holes II 8 at the side face are both 8mm, and the distance is 5 cm.
Example 3:
this example differs from example 2 in that: the hemp rope 10 comprises a rope I11 and a rope II 12; the rope I11 extends out of two ends of the drain pipe 1 by 10 cm; the rope II 12 extends out of the small hole I7 and the small hole II 8 by 2 cm.
Example 4:
this example differs from example 3 in that: the diameter of the drain pipe 1 is 3cm, and the thickness of the pipe wall is 2 mm; the apertures of the small holes I7 at the top of the drain pipe 1 and the small holes II 8 at the side face are both 8mm, and the distance is 5 cm. The hemp rope 10 comprises a rope I11 and a rope II 12; the rope I11 extends out of two ends of the drain pipe 1 by 10 cm; the rope II 12 extends out of the small hole I7 and the small hole II 8 by 2 cm.
Application example:
on a certain highway, the width of a roadbed is 33.5m, the design speed is 100Km/h, the integral roadbed section is provided, a double-width bridge is adopted as a bridge, and the full width of a single-width bridge is 16.5 m. The bridge adopts MZL-240 expansion joints, the longitudinal slope of the bridge is 1.5%, and the transverse slope of the bridge is 2%. The bridge site has abundant rain water and large maximum rainfall.
The method comprises the following steps: the inner diameter of the drainage pipe is determined to be 4cm according to the single width of the bridge, the bridge surface cross slope, the bridge longitudinal slope and the maximum rainfall at the bridge site, the thickness of the drainage pipe is 3mm, and the drainage length is 16.5 m.
Step two: the diameter of the small holes on the top surface and the side surface (one side) of the drain pipe is determined to be 10mm and the distance is determined to be 4cm according to the diameter of the drain pipe and the thickness of the pipe wall.
Step three: the diameter of the hemp rope arranged in the drain pipe is determined to be 3.9cm according to the diameter of the drain pipe, the length of the hemp rope is determined to be 16.6m, the diameter of the hemp rope in the small hole in the drain pipe is determined to be 10mm according to the diameter of the small hole in the drain pipe, the length of the hemp rope is determined to be 3.3cm, and the hemp rope is arranged in the small holes in the drain pipe and the drain pipe.
Step four: the vertical distance between the top surfaces of the expansion joint reinforcing steel bars and the bridge floor is 19.8cm, HRB400 reinforcing steel bars with the diameter of 25mm are adopted as the fixing reinforcing steel bars of the drain pipe, the length is 35cm, the distance is 25cm, and the position of the fixing reinforcing steel bars of the drain pipe is 18.55cm away from the bridge floor, so that the width of the steel plate of the part, below the drain pipe, of the L-shaped steel plate is determined to be 2.7 cm.
Step five: according to the bridge deck longitudinal slope and the bridge deck cross slope, the drainage device is determined to be installed at the joint of the left side of the expansion joint and the bridge deck pavement, the gradient of the drainage pipe is 2% as same as that of the bridge deck cross slope, and the distance between each drainage pipe positioning steel bar and the bridge deck is the same. And (4) binding and connecting the fixed reinforcing steel bars of the drain pipe with the reinforcing steel bars of the expansion joint, and then welding the fixed reinforcing steel bars of the drain pipe with the lower end of the L-shaped steel plate.
Step six: and a drain pipe is arranged on the L-shaped steel plate.
Step seven: and pouring steel fiber concrete in the slot of the telescopic seam.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a bridge expansion joint drainage device which characterized in that: comprises a drain pipe (1), an L-shaped steel plate (2) and a fixed steel bar (3); the drainage pipe (1) is tightly attached to the edge of a boundary surface (6) between the asphalt pavement layer (4) and the concrete pavement layer (5) on the side surface of the bridge expansion joint, and the top of the drainage pipe (1) is flush with the boundary surface (6); small holes I (7) and small holes II (8) are respectively distributed at the top and the side of the drain pipe (1); the L-shaped steel plate (2) is arranged below the drain pipe (1); the upper end of the fixed steel bar (3) is fixedly connected with the bottom of the L-shaped steel plate (2), and the lower end of the fixed steel bar is fixedly connected with an expansion joint steel bar (9) of the bridge expansion joint; the drain pipe (1) is filled with a hemp rope (10).
2. The drainage system for bridge expansion joints of claim 1, wherein: the opening of the small hole II (8) on the side surface of the drain pipe (1) faces to the interface (6).
3. The drainage system for bridge expansion joints according to claim 1 or 2, wherein: the diameter of the drain pipe (1) is 3-4 cm, and the thickness of the pipe wall is 2-3 mm; the apertures of the small holes I (7) at the top of the drain pipe (1) and the apertures of the small holes II (8) at the side face are both 8-10 mm, and the distance is 4-5 cm.
4. The drainage system for bridge expansion joints of claim 1, wherein: the hemp rope (10) comprises a rope I (11) and a rope II (12); the rope I (11) extends out of two ends of the drain pipe (1) by 10-15 cm; and the rope II (12) extends out of the small hole I (7) and the small hole II (8) by 2-3 cm.
5. The drainage system for bridge expansion joints of claim 1, wherein: the slope setting of drain pipe (1) is unanimous with the slope of pontic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020722974.1U CN212103654U (en) | 2020-05-06 | 2020-05-06 | Bridge expansion joint drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020722974.1U CN212103654U (en) | 2020-05-06 | 2020-05-06 | Bridge expansion joint drainage device |
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| CN212103654U true CN212103654U (en) | 2020-12-08 |
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| CN202020722974.1U Active CN212103654U (en) | 2020-05-06 | 2020-05-06 | Bridge expansion joint drainage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695638A (en) * | 2020-12-24 | 2021-04-23 | 中国十九冶集团有限公司 | Construction method of drainage type expansion device |
| CN114134807A (en) * | 2021-11-25 | 2022-03-04 | 中交三公局第二工程有限公司 | Expansion joint water draining method |
-
2020
- 2020-05-06 CN CN202020722974.1U patent/CN212103654U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695638A (en) * | 2020-12-24 | 2021-04-23 | 中国十九冶集团有限公司 | Construction method of drainage type expansion device |
| CN114134807A (en) * | 2021-11-25 | 2022-03-04 | 中交三公局第二工程有限公司 | Expansion joint water draining method |
| CN114134807B (en) * | 2021-11-25 | 2023-11-14 | 中交三公局第二工程有限公司 | Expansion joint water drainage method |
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